Finding the Third Proportional to 550,002 and 875,172

Step by Step Solution

1. Step 1: Write the proportion equation
   550,002 : 875,172 = 875,172 : x
2. Step 2: Convert to fraction form
   550,002/875,172 = 875,172/x
3. Step 3: Cross multiply
   550,002x = 875,172 × 875,172
4. Step 4: Simplify right side
   550,002x = 765,926,029,584
5. Step 5: Solve for x
   x = 765,926,029,584/550,002
6. Step 6: Final answer
   x = 1,392,587.72